“Donald Trump doesn’t know a whole lot about policing. He doesn’t know a whole lot about national security,” de Blasio said on 1010 WINS.

In a rash of finger pointing Monday morning, the presumptive Republican presidential nominee laid blame for the gay club massacre that killed 49 people on a host of targets including Syrian refugees and political correctness — and even singled out de Blasio for dismantling NYPD surveillance of Muslim neighborhoods.

“You know, in New York City we had a fantastic intelligence group set up when our mayor, our new mayor, de Blasio, he wiped it all out. It was the best in the country. He wiped it all out, he took it all out, gone, 100%. So now we don’t know what’s going on,” Trump said.

“The previous policy of surveillance had been counterproductive, unfair to members of the Muslim community. Because we want them to be our partners in fighting terror,” he told 1010 WINS. “Bill Bratton, my police commissioner, came to the decision that it wasn’t helping us, but it was alienating large segments of the Muslim community.”

De Blasio also said the mass shooting, the largest in U.S. history, shows the need to control dangerous assault weapons like the one used by shooter Omar Mateen.

“We won’t know the whole story and all the motivations here. What we do know is this man, like so many before him, had easy access to weapons — and weapons that could kill large numbers of people quickly,” he said.

Jeffrey Erikson and Jamie Fernandez hold each other during a teary vigil in Cal Anderson Park in Seattle for the victims of a mass shooting in Orlando.

(Genna Martin/AP)

“It’s a time to make these decisions as a country. I don’t think the American people are afraid to find a new solution. I think there are some very vested interests like the NRA that want to inhibit that kind of debate.”

The mayor and other top officials plan to attend a vigil Monday night outside the Stonewall Inn, and he reiterated that anti-terror cops would have an increased presence at that spot and other LGBT gathering spots, and gay pride celebrations this month.